Randall Munroe, the cartoonist behind the popular Internet comic xkcd, finds complicated solutions to simple, real-world problems. In the process, he reveals a lot about science and why the real world is sometimes even weirder than we expect. His latest book is called How To: Absurd Scientific Advice for Common Real-World Problems. (Encore episode.)Here's more on nuclear tests of bottled beverages from nuclear historian Alex Wellerstein.Email the show at shortwave@npr.org.